Definition of Trilobite

Definition of Trilobite

1.n. Any one of numerous species of extinct arthropods belonging to the order Trilobita. Trilobites were very common in the Silurian and Devonian periods, but became extinct at the close of the Paleozoic. So named from the three lobes usually seen on each segment.

Definition of Trilobite

1. Noun. (biology) An extinct arthropod of the class Trilobita, whose body had three large lobes. ¹

¹ Source: wiktionary.com

Definition of Trilobite

1. [n -S]

Medical Definition of Trilobite

1. Any one of numerous species of extinct arthropods belonging to the order Trilobita. Trilobites were very common in the Silurian and Devonian periods, but became extinct at the close of the Paleozoic. So named from the three lobes usually seen on each segment.
Origin: Cf. F. Trilobite. See Trilobate.
Source: Websters Dictionary
(01 Mar 1998)

Trilobite Pictures

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Literary usage of Trilobite

Below you will find example usage of this term as found in modern and/or classical literature:

1.Proceedings of the Royal Society of Victoria by Royal Society of Victoria (1900)"The most important fossil in the collection is a trilobite represented by three
well-preserved specimens and ... The trilobite is a new species of the genus ..."

2.Sketches of Creation: A Popular View of Some of the Grand Conclusions of the by Alexander Winchell (1870)"Such eyes had the trilobite (Fig. 28). It is marvelous that such delicate structures
have been so Fig. 28. ... The trilobite was tri-lobed in two respects. ..."

3.Sketches of Creation: A Popular View of Some of the Grand Conclusions of the by Alexander Winchell (1870)"Such eyes had the trilobite (Fig. 28). It is marvelous that such delicate structures
have been so Fig. 28. ... The trilobite was tri-lobed in two respects. ..."

4.Text-book of the Embryology of Invertebrates by Eugen Korschelt, Karl Heider, Edward Laurens Mark, William McMichael Woodworth, Matilda Bernard, Martin Fountain Woodward (1899)"The young which hatch at the trilobite stage are endowed with great activity,
and already burrow in the sand like the adults. By means of their abdominal ..."

5.Organic Evolution by Richard Swann Lull (1917)"... thoracic ones bore extensions of the pleura or side pieces which eventually
developed into wings. Primal Insects.—Out of this trilobite stock arose the ..."

6.Summarized Proceedings ... and a Directory of Members (1887)"The method of the production of the markings was then explained by a comparison
with the Ohio trilobite figured by ..."

7.Proceedings of the American Association for the Advancement of Science (1887)"The method of the production of the markings was then explained by a comparison
with the Ohio trilobite figured by Mickleborough showing that the ten strong ..."